How much does blast furnace slag cost?
Granulated slag is an important component of the total sales of blast furnace slags because of its relatively high unit value. In unground form, granulated slag sells for about $35 per ton and sells for about twice that amount as GGBFS (table 2).
Where does blast furnace slag come from?
Blast furnace slag (BFS) is a by-product from iron production in blast furnaces, which are fed by a mixture of iron-ore, coke and limestone. In the process, the iron ore is reduced to iron while all remaining materials form the slag, which is tapped off as a molten liquid and cooled.
Which industry produces blast furnace slag?
This molten iron product can be cast into iron products, but is most often used as a feedstock for steel production. Blast furnace slag is a nonmetallic coproduct produced in the process….User Guidelines for Waste and Byproduct Materials in Pavement Construction.
| Constituent | |
|---|---|
| Percent | 1957a. |
| 1968a. | |
| 1985a. |
Is iron slag worth anything?
Domestic Production and Use: Ferrous slags are valuable coproducts of ironmaking and steelmaking. Iron or blast furnace slag accounted for about 60% of the tonnage sold and was worth about $290 million; about 85% of this value was granulated slag.
Is slag good for driveways?
Steel slag is not just good for driveways, it is also used by homeowners as a landscaping stone in back yards around a pool area or patio. Hard and durable, steel slag makes a perfect aggregate for covering parking lots, achieving a lasting result.
What are the uses of slag?
Due to its positive technical characteristics, LD slag is used all over the world in road and railway construction and for engineering. The most common use is as an aggregate in the manufacture of asphalt. It is also successfully used as an aggregate for concrete.
How do you get a slag?
Slag is an item added by Thermal Expansion. It is obtained as a secondary output of smelting pulverized metals or dusts in an Induction Smelter. It can also be centrifuged from GregTech 4’s Dark Ashes.
What is the difference between blast furnace slag and steel slag?
The slag produced at blast furnace during pig iron manufacturing is called blast furnace slag. The slag produced at steel melting shop is known as steel slag. Slag output obtained during pig iron and steel production is variable and depends mainly on composition of raw materials and type of furnace.
How is slag obtained?
Slag, by-product formed in smelting, welding, and other metallurgical and combustion processes from impurities in the metals or ores being treated. Slag floats on the surface of the molten metal, protecting it from oxidation by the atmosphere and keeping it clean.
Is Ggbs expensive?
As GGBS cement is slightly less expensive than Portland cement, concrete made with GGBS cement will be similarly priced to that made with ordinary Portland cement. It is used partially as per mix ratio.
Why is slag bad?
These are the final waste products from the steel industry and make up a proportion of approximately 15% by mass of the steel output [2]. When SSRS compares with ground granulated blast furnace slag (GGBFS) from iron making, steel slag contains toxic ingredients such as nickel, cadmium, chromium and strontium.
How do you identify a slag?
Slag is one of the materials that is often confused for meteorites. This slag, however, will usually be porous or even bubbly which is a clue that it is not a real space rock. Meteorites, in some cases, may exhibit vesicles, but they are not porous or bubbly in appearance.
What are the uses of blast Furnance?
In ready mix concrete plants.
What can blast furnace waste slag be used for?
Consequently, construction waste aggregates and blast furnace slag can be used to improve the mechanical properties, workability, and chemical resistance of the conventional concrete mixtures.
What is the density of blast furnace slag?
The granulated mate- rial, which is ground to less than 45 microns, has a surface area fineness of about 400 to 600 m 2/kg Blaine. The relative density (specific gravity) for ground granulated blast- furnace slag is in the range of 2.85 to 2.95. The bulk density varies from 1050 to 1375 kg/m3 (66 to 86 lb/ft3).
What is ground granulated blast furnace slag?
Ground granulated blast-furnace slag. Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.